The automatic voltage regulator PCB circuit of generator set has the characteristics of good regulation performance, strong adaptability and low cost. It can be used for automatic voltage regulation of various medium and small internal combustion generating sets and hydropower stations, and can also be used to transform old generating sets. PCB circuit works The generator set automatic voltage regulator PCB circuit by the synchronous trigger power PCB circuit, relaxation oscillation trigger, voltage regulator control PCB circuit, reactive current regulation PCB circuit, external power protection PCB circuit. Simultaneous trigger power PCB circuit by the power transformer T, rectifier diodes VD4 ~ VD9, Zener diode VS1 and resistors R1 composition. Relax oscillation trigger PCB circuit by the transistor V2, single-junction transistor VU, resistors R2 ~ R5 and capacitor C2, C3 composition. Regulated voltage control PCB circuit by the power transformer T, rectifier diodes VD10 ~ VD15, resistors R6 ~ R8, potentiometer RP2, capacitor C1 and Zener diodes VS2, VS3 composition. Reactive current regulation PCB circuit by the current transformer TA, potentiometer RP1, switch S1 and rectifier diodes VD16 ~ VDl9 composition. Excitation PCB circuit from the alternator G and other exciting winding WE; diode VD1, VD2, thyristor VT, K1 normally closed contact K1 ~ 1, fuse FU1 and other components. External power protection PCB circuit by the resistor R9 ~ Rl2, diode VD25 ~ VD31, transistor V1, capacitor C4 ~ C8 and K2 relay . Magnetizing PCB circuit by the magnetizing button S2, diode VD2O ~ VD24, K1 normally closed contact K1 ~ 2, fuse FU2 and T of the W4 winding composition. The three-phase AC voltage crystal from the generator G is stepped down by T and generates 30V three-phase sinusoidal AC voltage on the W5-W7 winding of T and 18V three-phase sinusoidal AC voltage on the W8-W1O winding. W5 ~ W7 winding voltage by VD4 ~ VD9 rectifier, R1 current-limiting buck and VS1 regulator, resulting in 15V DC trapezoidal wave voltage, as the oscillation oscillation trigger synchronous power supply; W8 ~ W1O winding voltage by VD1O ~ VD15 rectification, R6 and RP2 current-limiting step-down and C1 filtering, and then added to the relaxation oscillation flip-flop through the bridge measurement PCB circuit consisting of R7, R8 and VS2, VS3 as the control signal voltage. When the generator G is just starting to generate electricity, the voltage across the C (the input voltage of the bridge measurement PCB circuit) is low, VS2 and VS3 are not conducting, and the relaxation oscillation trigger does not work. When the generator G terminal voltage rises to 200V, VS2 and VS3 breakdown conduction, the relaxation oscillation trigger work, from the first base VU pulse signal output, the signal by VD3 added to the VT gate As its trigger signal. In this way, the generator sets up the no-load voltage in a short period of time. This example describes the generator set automatic voltage regulator PCB circuit, with good performance, adaptability, low cost, etc., can be used for a variety of medium and small internal combustion generating units and hydropower stations and other automatic voltage regulator, can also be used to transform Vintage generator set. PCB circuit works The generator set automatic voltage regulator PCB circuit by the synchronous trigger power PCB circuit, relaxation oscillation trigger, voltage regulator control PCB circuit, reactive current regulation PCB circuit, external power protection PCB circuit. Simultaneous trigger power PCB circuit by the power transformer T, rectifier diodes VD4 ~ VD9, Zener diode VS1 and resistors R1 composition. Relax oscillation trigger PCB circuit by the transistor V2, single-junction transistor VU, resistors R2 ~ R5 and capacitor C2, C3 composition. Regulated voltage control PCB circuit by the power transformer T, rectifier diodes VD10 ~ VD15, resistors R6 ~ R8, potentiometer RP2, capacitor C1 and Zener diodes VS2, VS3 composition. Reactive current regulation PCB circuit by the current transformer TA, potentiometer RP1, switch S1 and rectifier diodes VD16 ~ VDl9 composition. Excitation PCB circuit from the alternator G and other exciting winding WE; diode VD1, VD2, thyristor VT, K1 normally closed contact K1 ~ 1, fuse FU1 and other components. External power protection PCB circuit by the resistor R9 ~ Rl2, diode VD25 ~ VD31, transistor V1, capacitor C4 ~ C8 and K2 relay. Magnetizing PCB circuit by the magnetizing button S2, diode VD2O ~ VD24, K1 normally closed contact K1 ~ 2, fuse FU2 and T of the W4 winding composition. The three-phase AC voltage crystal from the generator G is stepped down by T and generates 30V three-phase sinusoidal AC voltage on the W5-W7 winding of T and 18V three-phase sinusoidal AC voltage on the W8-W1O winding. W5 ~ W7 winding voltage by VD4 ~ VD9 rectifier, R1 current-limiting step-down and VS1 regulator, resulting in 15V DC trapezoidal wave voltage, as a synchronous oscillation oscillation trigger power; W8 ~ W1O winding voltage by VD1O ~ VD15 rectification, R6 and RP2 current-limiting step-down and C1 filtering, and then added to the relaxation oscillation flip-flop through the bridge measurement PCB circuit consisting of R7, R8 and VS2, VS3 as the control signal voltage. When the generator G is just starting to generate electricity, the voltage across the C (the input voltage of the bridge measurement PCB circuit) is low, VS2 and VS3 are not conducting, and the relaxation oscillation trigger does not work. When the generator G terminal voltage rises to 200V, VS2 and VS3 breakdown conduction, the relaxation oscillation trigger work, from the first base VU pulse signal output, the signal by VD3 added to the VT gate As its trigger signal. In this way, the generator sets up the no-load voltage in a short period of time.
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